“Well, everything comes to an end, sooner or later," she said. "Everything begins and ends. Everything changes.”

“Is it possible to love so desperately that life is unbearable? I don't mean unrequited, I mean being in the love. In the midst of it and desperate. Because knowing it will end, because everything does. End.”

“My mother always said that I would come to a bad end but I never thought she meant this - writing allegory in literal times.”

“The Innocent Mage is come , and we stand at the beginning of the end of everything”

“By the way," said Tegan, suddenly very self-conscious. "Thank you." "What?" "You were prepared to give up everything for us." The Doctor just smiled and stood up. "Oh, come on!”

“Everything that has a beginning has an ending. Make your peace with that and all will be well.”

“The measure of a man, she said finally, is not the words that mark his end, but everything he’s done since his beginning.”